Acta Metall Sin  1988, Vol. 24 Issue (2): 111-118    DOI:

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RELATIONSHIP BETWEEN CREEP BEHAVIOR AND DISLOCATION SUBSTRUCTURE IN Ni-20Cr ALLOYS

ZHANG Junshan Associate Professor;Department of Materiats Seience and Engineering;Dattan Institute of Technology;CAO Zhiben Dalian Institute of Technology

ZHANG Junshan Associate Professor;Department of Materiats Seience and Engineering;Dattan Institute of Technology;CAO Zhiben Dalian Institute of Technology. RELATIONSHIP BETWEEN CREEP BEHAVIOR AND DISLOCATION SUBSTRUCTURE IN Ni-20Cr ALLOYS. Acta Metall Sin, 1988, 24(2): 111-118.

Abstract References Related Articles Recommended Metrics Download:  PDF(2281KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The relationship between creep behavior and dislocation substructurein Ni-20Cr alloys has been studied over the temperature range of 1173-1323K. A stage of substeady-state creep was observed in which creep rate ε_t is al-most constant in the primary stage of creep. TEM observation confirmed that thesubsteady-state creep corresponds to relatively homogeneous dislocation structurewhile the steady-state creep corresponds to subgrain structure. The creep rate reducecontineously from ε_t to ε_m, which has been attributed to the gradual substitutionof subboundaries for grain boundaries as dislocation climb site. The substructural parameter, subboundary misorientation, θ, or subboundarymesh size, h, has been related to the steady-state creep rate in recovery creep, whichcan be discribed as ε=αρ_t bV_c/h. A mechanism of recovery creep involving dis-location annihilation at subboundaries or grain boundaries was proposed and theeffect of solute carbon and grain boundary carbides on creep behavior has beendiscussed using above michanism. Key words:  substeady-state      substructure      subboundary mesh size      subgrain misorientation      dislocation annihilation      Received:  18 February 1988      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1988/V24/I2/111 1 Orlova A, Cadek J. Mater Sci Eng, 1986; 79: 1 2 Cailard D, Martin J L. Acta Metall, 1983; 31: 813 3 Morris M A, Martin J L. Acta Metall, 1984; 32: 1609 4 Suh S H, Cohen J B, Weetman J. Metall Trans A, 1983; 14: 117 5 Sherby O D, Burke P M. Prog Mater Sci, 1968; 13: 325 6 Bendersky L, Rosen A, Mukherjee A K. Scripta Metall, 1982; 16: 467 7 竹山雅夫,松尾孝,田中良平.铁钢,1986;72:1359 8 松尾孝,森岡信彦.电气制钢,1985:56:91 9 张俊善,松尾孝,菊池実,田中良平.铁钢,1987;73:183K [1] WANG Liuding DING Fucai WANG Baimin ZHU Ming ZHONG Yingliang LIANG Jinkui. INFLUENCE OF SUPER--FINE SUBSTRUCTURE ON TOUGHNESS OF LOW--ALLOYING ULTRA--HIGH STRENGTH STRUCTURE STEEL[J]. 金属学报, 2009, 45(3): 292-296. [2] ZUO Rulin; ZHOU Shouze; DING Peidao (Department of Metallurgy and Materials Engineering; Chongqing University; Chongqing 630044). SHEAR PROCESS OF FERROUS MARTENSITES[J]. 金属学报, 1996, 32(9): 904-912. [3] XU Yongbo;BAI Yilong;SHEN Letian;XUE Qing;LI Huan;KONG Dan( State Key Laboratory for Fatigue and Fracture of Materials;Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015)(Laboratory for Non-Linear Mechanics of Continuous Media;Institute of Mechanics;Chinese Academy of Sciences;Beijing 100080)(Manuscript received 1994-10-28;in revised form 1995-04-01). FORMATION AND DEVELOPMENT OF SHEAR DEFORMATION LOCALIZATION IN LOW CARBON STEELS[J]. 金属学报, 1995, 31(11): 485-493. [4] SUN Jialin Kunming Institute of Technology; KANG Mokuang Northwestern Polytechnical University; Xi'an. SUBSTRUCTURAL AND CRYSTALLOGRAPHIC FEATURES OF LOWER BAINITE[J]. 金属学报, 1991, 27(3): 72-76. [5] ZHANG Jinghui;LI Dajun;ZHAO Jiuzhou;JIA Jun;LI Jianhui Harbin Institute of Technology; Heilongjiang Association for Science and Technology; Harbin. STRUCTURAL FEATURE OF AS-CAST HIGH Cr INJECTION MICROALLOYING MARTENSITIC CAST IRON[J]. 金属学报, 1990, 26(6): 105-109. [6] ZHONG Jiaxiang;QI Yan;ZHANG Xiumu;GUO Yunyi Beijing Institute of Technology Institute of Metal Research; Academia Sinica; Shenyang. MORPHOLOGY OF A NEW TYPE OF MARTENSITE[J]. 金属学报, 1990, 26(5): 11-15. [7] WANG Jingyi;TAN Yuxu;MA Zenghai Xi'an Institute of Technology Xi'an Jiaotong University associate professor;Institute of Metallic Materials and Strength;Xi'an; Jiaotong University; Xi'an 710049. SUBSTRUCTURAL ALTERATION OF STAINLESS STEEL DURING CONSTANT STRAIN FATIGUE[J]. 金属学报, 1990, 26(2): 52-56. [8] TAN Yuxu;REN Liping;LI Gang Xi'an Jiaotong University TAN Yuxu; Associate professor; Institute of Metallic Materials and Strength; Xi'an Jiaotong University; 710048 Xi'an. EFFECT OF SUBSTRUCTURE AND RESIDUAL STRESS IN STRENGTHENED LAYER ON FATIGUE STRENGTH OF STAINLESS STEEL OR LOW CARBON STEEL[J]. 金属学报, 1989, 25(5): 59-64. [9] ZHANG Junshan;CHEN Weixing;CAO Zhiben Dalian University of Technology. GRAIN BOUNDARY FEATURES AND CREEP BEHAVIOR OF Fe-15Cr-25Ni ALLOYS[J]. 金属学报, 1989, 25(2): 65-70. [10] TAN Yuxu;REN Liping;LI Gang Xi'an Jiaotong University Manuscript received 9 October; 1987; revised Manuscript 11 January; 1988. CHARACTERISTIC OF SURFACE STRENGTHENED LAYER AND FATIGUE STRENGTH OF α-BRASS[J]. 金属学报, 1989, 25(1): 62-67. [11] LIU Yumen;WU Shanghua Xi'an Jiaotong University. CHARACTERISTICS OF MARTENSITE IN A HIGH-CARBON FERROALLOY[J]. 金属学报, 1988, 24(5): 325-330. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed